Automatic gas-pressure regulator and cut-off.



No. 797,664. PATENTED AUG. 22, 1905.. J. W. GOTTINGHAM & G. W. FRANKLIN.AUTOMATIC GAS PRESSURE REGULATOR AND GUT-OFF.

APPLICATION FILED MAR. 16. 1905.

WITNESSES: VENTOHJ 7% M $44M f/lw/ Arm v UNITED STATES PATENT OFFICE.

JOHN W. COTTINGHAM AND CHARLES l/V. FRANKLIN, OF LEIPSIC, OHIO,

AUTOIWATBC GAS-PRESSURE REGULATOR AND CUT-OFF.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed March 16, 1905. Serial No. 250,390-

;Z'o all whom it may concern.

Be it known that we, JOHN W. CoT'rINenAM and CHARLES W. FRANKLIN,citizens of the United States, residing at Leipsic, in the county ofPutnam and State of Ohio, have invented new and useful Improvements inAutomatic Gas -Pressure Regulators and Cut- Offs, of which the followingis a specification.

This invention is an automatic gas-pressure regulator and cut-offintended for the purpose of regulating gas-pressure and for cutting offthe supply when the pressure fails, at the same time sounding a signalto give notice of that fact.

A. further feature is the sounding of another signal when the gaspressure or supply comes on again.

The invention is characterized by improvement in the features abovereferred to and also in other features, as will be more fully apparentfrom the following description.

The accompanying drawing is a sectional elevation of the apparatus.

Referringspeciiicall y thereto, the apparatus comprises a casingcontaining inlet and outlet valves, a diaphragm to control theinlet-valves,

and another diaphragm controlling the electrical apparatus having adouble contact to operate different signals when the gas is on or off.

A indicates the inlet to the casing V from the supply-main, and B theoutlet to servicepipes. lVithin the casing is an inlet-valve Z, the stemof which is secured to a diaphragm A, clamped to the bottom of thecasing by a cap B. The pressure required to close the valve adjusted andregulated by means of a spring D and adjusting-screw C, which is tappedinto the cap B. As the pressure in creases the diaphragm A is forceddown against the tension of the spring, and the opening of the valveZdecreases accordingly, thereby regulating the supply and the pressure.

The outlet Bis controlled by a valve Q, which works through a gland inthe top of the easing and is connected by its stem I to a lever O,pivoted to a standard X on top of the easing and having at one end ahandle O and at the other end a spring R in tension tending to pull downthat end of the lever and close the valve Q.

M is an armature pivoted to the bracket M and having at the upper end ahook arranged to engage a hook N on the under side of the lever O.

L is an electromagnet supported on the bracket and controlling thearmature. By means of a four-pole switch IV this magnet may be put incircuit with a gas-off bellT.

S is a gas-on bell in circuit with two poles of the switch and thebatteryU and the contact K by means of the wire .9, the other circuitbeing through the contact J and wire tto the other bell and the battery.These contacts J and K are located on opposite sides of a lever H, whichis pivoted to the standard X and carries a pin which rests upon adiaphragm E, clamped between the cap I and the casing V. The pin Grworks loosely through a hole in the cap, and the diaphragm is under thepressure of the gas in the casing beyond the inlet-valve Z.

By changing the switch W the circuits may be established either with thebell S or the bell T. In the drawing, J is shown in circuit with thegas-otf bell T, ready to sound said bell if the gas-pressure shouldfail. In the event of such failure the diaphragm E and lever H drop,making the contact at J, which closes the circuit through the magnetL,which draws the armature and unhooks the lever 0, allowing the spring Rto close the valve Q, which thus stays closed until opened by hand. Atthe same time the alarm T is sounded and continues to sound until someone comes and turns the switch to break the circuit. A quarter-turn ofthe switch cuts in the bell S, and the parts remain in this conditionuntil the gas-pressure comes on again. Then the diaphragm E lifts andmakes contact at K, which starts the bell S to ringing, notifying thepeople that the gas is on. Then the switch is turned back to connect thecircuit of the bell T and the valve Q is opened by thelever O and hookedby the armature, as in the beginning.

l/Vhat we claim as new, and desire to secure by Letters Patent, is*

1. In a pressure-regulator, in combination, a casing having an inlet andan outlet, avalve at the inlet, and a separate cut-off valve at theoutlet, and pressure-operated controlling means for each of said valveslocated in the casing between the valves and both subject to the samepressure.

2. In a gas cut-off, the combination with a casing havinga cut-elfvalve, and a diaphragm therein controlling the valve, of means actuatedby the diaphragm to sound a signal when the gas-flow fails, and meansincluding a handoperated device and devices actuated by the diaphragm toalso sound a signal when the gasfiow resumes.

3. In a pressure-regulator, in combination, a casing, separate inlet andcut-01f valves in the casing, diaphragms in the casing, subject to thepressure between the valves, one diaphragm being connected to andcontrolling the inlet-valve, and means for controlling the cutofi? valveconnected to and actuated by the other diaphragm.

4. In a gas cut-ofl, the combination with a casing havingadiaphragm anda cut-off valve therein, ofa lever connected to the diaphragm, separatebells having separate circuits with contacts on opposite sides of saidlever, a latch constructed to hold the valve open, and electromechanicalmeans operated by the lever to release the latch and sound one of thebells when the pressure falls, and means including devices operated bysaid lever to sound the other bell when the pressure resumes.

5. In agas cut-01f and signal, the combination With a cut-off valve, andgas-off and gas-on bells having separate circuits and contacts in each,of a switch in the circuits, constructed to respectively open and closethe same, electromechanical means in the circuit of the gas-off bell toclose the cut-ofi' valve, and pressure-actuated means to close therespective contacts when the gas-pressure fails and resumes.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

JOHN W. COTTINGHAM. CHARLES IN. FRANKLIN. Witnesses:

A. A. SLAYBAUGH, IV. A. BELL.

